Product details

  • The 48V 5A GaN power supply unit is specifically designed for use with amplifiers and is ideal for providing reliable power to Fosi Audio amplifiers, such as BT20A Pro, TB10D, V3 and ZA3 amplifiers.

  • An amp's excellent performance is inseparable from the blessing of a high-quality power supply. This gallium nitride power supply unit has a power output of 240W, allowing your amps to be fully driven. The overload and over-temperature protection escorts you to enjoy music continuously and stably.

  • With an exquisite body, excellent workmanship and outstanding energy efficiency, the 48V GaN power supply unit will complement Fosi Audio’s high-performance mini amplifiers.
    Input: AC 100-240V
    Output: 48V/5A, 240W
    Compatible Amps: V3, BT20A Pro, TB10D, ZA3
    Total Length: 286cm

FAQs

Please read our FAQs page to find out more.

How to: Choose the right banana plug?
  • Closed Screw Type. All Fosi amplifiers use standard-sized speaker terminals (4mm pins).
  • Easy to wire up and solidly connect to amplifier and passive speaker.
  • If they do not fit, use a little force to tighten the plugs.
  • Fosi Audio Banana Plugs (Copper, Silver/Gold Plated): http://bit.ly/40Djq0U, https://bit.ly/3MkPL8t
  • Please watch tutorial videos: https://youtu.be/6pYhoqDlvNw / https://youtu.be/RGvBgGAwS9k
How to Diagnose Power Supply Failure?
  • The following situations may cause this issue
  • Case 1: The LED on the power supply does not light up; Case 2: Amp/Preamp does not turn on; Case 3: When plugged into the Amp, both light on the amp & power supply start blinking; Case 4: Amp/Preamp make noise; Case 5: Sound shuts off by itself
  • Possible solution
  • Check if the power supply is illuminated when plugged into AC by itself.

    Plug power supply into a different socket.

    Test the adapter with a meter.

    Try a different power supply (within a range of DC input).

    Test the included power supply on other electrical equipment.

    Please watch the tutorial video by clicking on the link provided. https://youtu.be/yCjygS03zTE
What are the differences in power outputs using the 32V and 48V power supplies?
  • Using a more powerful power supply can help prevent distortion.
  • Enables amplifier to drive larger, more powerful, or higher-impedance speakers.
What is a GaN?
  • The GaN supply has a power output of 240W.
  • Offers overload and over-temperature protection.
  • The 48V 5A GaN power supply is also available on Amazon.

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Customer Reviews

Based on 8 reviews
75%
(6)
25%
(2)
0%
(0)
0%
(0)
0%
(0)
J
Jonathan Ryan
Quality product

I bought it twice on Amazon and both times received what seemed to be used products. I returned them both and ordered direct from Fosi and received a new one. I'm not sure it makes a difference in my system, but it stays nice and cool and is well built. If nothing else it should last longer than the standard power supplies and as a bonus you may save a few pennies a year.

M
Massimo Mazzara
Stabile ed affidabile

Da oltre un anno tengo costantemente collegato alla rete questo alimentatore connesso al mio piccolo amplificatore BT20APRO che uso in cucina con due casse Kef. Devo dire che non mi ha mai deluso. E' stabile, silenzioso e non si surriscalda. Ritengo affidabile al 100%

F
Francois Smith
GAN power...

I didn't notice the power lead change when I ordered the power supply, so now I have the older one with a figure 8 plug and the new one that has the earthing point.

They both work very well and the power supplied is balanced.

K
Kevin Shorter
Item received in good condition and as advertised. Customer Service also was a big help.

The power supply I ordered arrived in good condition and working order once I received it. Supply works exactly as advertised. This order got hung up in US Customs handoff to the Post Office and it appeared to be lost. However Fosi Customer Service got engaged and somehow spurred finding the package and getting it moving from Customs to the Post Office for delivery. Their help was greatly appreciated.

C
Calvin Oliver
New to Audiophilism

Got the Fosi Audio ZA3 with the 48V GAN Power Supply and the ZD3 to go with a Wiim Pro Plus, through GR Research crossover modded Neumi BS5s... and it all sounds exquisite! Quality components at real people prices!